Powdered-fuel burner



May 8, 1923.

H. BLEIBTREU POWDERED FUEL BURNER Filed April 50, 1920 5 Sheets-Sheet 1 May 8, 192.)

H. BLEIBTREU POWDERED FUEL BURNER Filed April 50, 1920 5 Sheets-Sheet 2 May 8, 1923.

1,454,664 H. BLEIBTREU POWDERED FUEL BURNER Filed April 30, 1920 5 Sheets-Sheet 4 l a M May 8, 1923 5 Sheets-Sheet 5 H BLEEBTREU POWDERED FUEL BURNER- Filed April 50, 1920 the conihnsthm chamber and the fire box co siderably less'than the travel of the v uei from the ordinary burner. which is locat d at the rear of the iirc box. 'lheicfore, this burner. while Supplrin; the desired degree of heat. does not. break down the tire brick, particularly at the wall 9 and does not injure the tubes to such an extent as the burners heretofore used. so that theapparatns is cspcciallv adapted for use in locomo tire boilers where the space in the tire boxis comparatively limited.

in some instances. it may provide a heating chamber for heating the air prior to its entering the combustion chamber. in Figs. 4. 5. (i and l" l haveshown such a'device, 32% is a casing having partitions or deflectors 3- so to cause th 1 air to travel in a circuitous path from an inlet conduit'l-h'i to the passages leading to the slots or ports 16 and 17. This casingis nclosed in tire brick. as shown in the drawings. 1 have shown a fire brick deflector 36 located in the'fire box of the locomotive so that th products of combustion, after passing from the combustion chamber. circulate around this deflector before ntering the tubes of the boiler.

I claim L'The combination in a powdered fuel burning apparatus. for locomotives. of a fire box: a combustion chamber at one end of the fire box and communicating there- 'with; a series of fuel nozzles at each side of the combustion chamber communicating tlwrewith: means for feedinr powdered fuel through the nozzles and into the chamber;

means fousupplying air to said chamber; a u. a. wall m the fire box opposite the com bustion chamber, said fire bus -having an inb'nstion chamber; air ports opening into the chamber at each side thereof; and means for supplying: air to said ports so that the powdered fuel will be held in suspension, the

ln-this instance,.

and open at the opposite end so that the fuel projected from the nozzles will comming'le, the flame of the burnin; fuel passing out of theopcn endof the chamber.

4. The combination in means for burning powdered fuel, ofa casing forming a combustion chamber open at one end onlvand flaring towards said end:' a series. of fuel nozzles at each side of the chamber and cornmunicating therewith: air ports communicatinp, with the" chambe above and below the fuel nozzles; air chambers with which the all ports communicate; means forsupplying the chambers with air; and means for fcedin; powdered fuel to the nozzles.

'lhc'combination of a locomotive fire box having" a fire brick wall in the front end thereof: a combustion chamber at the rear portion of the fire box andopcn in line with the fire brick wall: a series of fuel nozzles connnunicating with the combustion chain-- her at eachside thereof: and means for supplying air to the chamber above and below the nozzles; the fuel projected from the nozzles connningling and .the flame of the burnlug fuel passing out of the. open end of the chamber towards the fire brick wall. I

6. The combination of a locomotive boiler having a fire box; a combustionchamber located in one end of the.fire box. said cham- (ber being closed -with the exception of. the front end: a series of nozzles located at each side of the said "chamber and connnunicat ing thciewith; means for feedinc powdered fuel to the nozzles; a series of air ports opening into the chamber at each side thereof; and heating chambers located within the fire box of the boiler and communicating with the air ports.

' HERMANN BLEIBTREU. 

